CSS: tr under what table

Dunno if I posted the title correctly. Sounds silly. I need help here with CSS. I'm wanting to almost like inherit. Sorry for my bad explanation. I don't know much about CSS. So, I'll illustrate a bit.

I have a table and wanted to be darkgrey and all tr of that table is lightgrey. And I have .navigator class and called it something like

<table class="navigator">

and I don't want to call <tr class="somelightgreyclass"> to all tr. How do I apply a lightgrey to all tr inside the table having the class navigator?

Thanks in advance.

I guess this solves it

table.navbar{
background:#c7c7c7;
}
table.navbar *{
background:#efefef;
}

Anyone has another solution? Please post. Thanks.

table.navbar tr{
background:#efefef;
}

isn't it?

Yes it is.